249215016959 has 2 divisors, whose sum is σ = 249215016960. Its totient is φ = 249215016958.

The previous prime is 249215016863. The next prime is 249215016961. The reversal of 249215016959 is 959610512942.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249215016959 is a prime.

Together with 249215016961, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249215016959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249215016989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124607508479 + 124607508480.

It is an arithmetic number, because the mean of its divisors is an integer number (124607508480).

Almost surely, 2^249215016959 is an apocalyptic number.

249215016959 is a deficient number, since it is larger than the sum of its proper divisors (1).

249215016959 is an equidigital number, since it uses as much as digits as its factorization.

249215016959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The spelling of 249215016959 in words is "two hundred forty-nine billion, two hundred fifteen million, sixteen thousand, nine hundred fifty-nine".